Kicking - What's Your Angle?

The stomp footwork thread brought this to mind - pardon me if it's been beaten to death.

I noticed a few months back that some of my kicks were starting to flatten out and strike perpendicular to the target - my round kicks to the solar plexus and groin and side kick to the hip, in particular. This is not the way they were taught but sometimes the emphasis gets lost.

All of the kicks I have learned in Filipino arts should be delivered at a 45 degree angle to the target, either rising or descending, depending on the target.

Rising:

The throat, chin, solar plexus, ribs, groin, front kick to the knee.

Descending: Side kick to the knee, ankle, stomps.

Since I have seen footage of many styles where kicks are sent straight in at the target, I was wondering about other styles - what's your angle?

I try and lose as little force as possible through grazing them, I want to hit as horizontaly as possible. The more vertical the angle in your kick, the more energy will be wasted without penetrating through the target

depends on the kick really. One of the kicks my thai boxing instructor has been having me work on comes in at an upward angle. It's fast and hits hard and even if it's checked you can blast right through their checking leg. I'm not that good at this kick yet, but my instructor has messed some people up with it.

I tend to bring my leg in an arch and kick at a downward angle with most of my kicks, though. As far as angle in relation to where my opponent is facing, I'll come in more towards the front at closer range since I'll be using a bent leg kick (like when I'm in clinch range) or if I'm just a little out of range or if I kick while my opponent is backing away I'll kick more along their side since I'll be using a more straight legged kick.